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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What keyword would you use to ensure a variable is not optimized away by the compiler when it can be changed unexpectedly?
💡 Hint: Think about variables that might change due to external factors.
Question 2
Easy
Write a line of code to set pin PD6 as an output.
💡 Hint: You are manipulating the Data Direction Register.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What command sets a pin as an output in C for AVR microcontrollers?
- DDRD |= (1 << PD6);
- PORTD ^= (1 << PD6);
- DDR |= (1 << OUTPUT);
💡 Hint: Focus on the DDR which is responsible for pin direction.
Question 2
True or False: The volatile keyword is used for variables that are rarely modified.
- True
- False
💡 Hint: Consider the behavior of variables in different contexts.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Write a C/C++ code that sets up an interrupt to toggle an LED when a button is pressed. Ensure to declare the flag variable correctly.
💡 Hint: Remember to set up the correct microcontroller registers to handle the button press.
Question 2
Discuss how you could optimize your code if your microcontroller has limited memory resources while also needing to handle multiple LED states.
💡 Hint: Consider the impact of your data structures on memory allocation.
Challenge and get performance evaluation